WO2008013116A1 - Method for changing die of press machine and press machine - Google Patents

Method for changing die of press machine and press machine Download PDF

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Publication number
WO2008013116A1
WO2008013116A1 PCT/JP2007/064355 JP2007064355W WO2008013116A1 WO 2008013116 A1 WO2008013116 A1 WO 2008013116A1 JP 2007064355 W JP2007064355 W JP 2007064355W WO 2008013116 A1 WO2008013116 A1 WO 2008013116A1
Authority
WO
WIPO (PCT)
Prior art keywords
slide
press machine
mold
height
die
Prior art date
Application number
PCT/JP2007/064355
Other languages
French (fr)
Japanese (ja)
Inventor
Motonao Niizuma
Original Assignee
Ihi Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ihi Corporation filed Critical Ihi Corporation
Priority to DE112007001658T priority Critical patent/DE112007001658T5/en
Priority to US12/375,134 priority patent/US20100064907A1/en
Publication of WO2008013116A1 publication Critical patent/WO2008013116A1/en

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/028—Loading or unloading of dies, platens or press rams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/04—Movable or exchangeable mountings for tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D37/00—Tools as parts of machines covered by this subclass
    • B21D37/14—Particular arrangements for handling and holding in place complete dies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
    • B30B1/26—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by cams, eccentrics, or cranks
    • B30B1/266—Drive systems for the cam, eccentric or crank axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/04—Frames; Guides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/06—Platens or press rams

Definitions

  • the present invention relates to a die changing method for a press machine and a press machine.
  • Press machines are classified according to the pressure generation mechanism, and can be broadly classified into “hydraulic press” using hydraulic pressure and “mechanical press” using mechanical driving force.
  • hydraulic presses are more productive and easier to maintain than hydraulic presses, so most of the press work is currently done with mechanical presses.
  • FIG. 1 is a diagram showing a schematic configuration of a conventional general mechanical press 40.
  • a bed 41 is disposed at the lower part of the mechanical press 40, and a bolster 42 for placing and fixing the lower mold 44 is disposed on the bed 41.
  • a slide 45 is provided above the bolster 42 so as to be movable up and down.
  • the upper mold 43 is fixed to the lower surface of the slide 45 by a die clamper 57.
  • a drive shaft 46 is rotatably supported on the upper part of the mechanical press 40.
  • a flywheel 47 and a clutch 48 are arranged at one end of the drive shaft 46! /.
  • a timing belt 51 is wound between the flywheel 47 and a pulley 50 attached to the output shaft of the main motor 49. By rotating the main motor 49, kinetic energy is stored in the flywheel 47, and this energy is released through the clutch 48 to drive the drive shaft 46.
  • a pinion gear 52 is attached to the drive shaft 46, and the pinion gear 52 is meshed with a main gear 54 attached to the crankshaft 53.
  • a connecting rod 55 is rotatably connected to the eccentric portion 53a of the crankshaft 53.
  • the connecting rod 55 is connected to the slide 45 via the slide adjusting mechanism 56.
  • the slide adjustment mechanism 56 adjusts the die height (the distance between the lower surface of the slide 45 and the upper surface of the bolster when the slide 45 is at the bottom dead center) by changing the vertical position of the slide 45 at the slide bottom dead center. .
  • the kinetic energy is accumulated by rotating the flywheel 47 by the rotational drive of the main motor 49, and the clutch 48 is engaged when the clutch 48 is engaged.
  • the kinetic energy of the lie wheel 47 is released, the power is transmitted through the drive shaft 46, the pinion gear 52, and the main gear 54.
  • Slide 45 moves up and down between top dead center and bottom dead center.
  • the position where the slide 45 can be stopped normally is normally limited to the top dead center and the bottom dead center. Yes.
  • the flywheel 47 usually rotates in one direction, and the direction of rotation is difficult to change.
  • the mechanical press 40 since a die is used according to the type of press-molded product to be produced, the die is exchanged. With reference to FIG. 2, the procedure for changing the mold of the conventional mechanical press 40 will be described. In the following, the current mold (mold before replacement) is called “current mold”, and the next mold (mold after replacement) is called “next mold”.
  • the slide adjusting mechanism 56 is adjusted so that the bottom surface of the slide at the bottom dead center of the slide becomes a height for producing the current model.
  • the slide adjustment height at this time is referred to as “the slide adjustment height for current production”.
  • the slide adjustment mechanism 56 is operated so that the bottom surface of the slide at the bottom dead center of the slide is the height for unclamping the upper mold 43 (the upper mold 43 is placed on the lower mold 44 and the upper mold 43 To a height suitable for unclamping).
  • the slide adjustment height at this time will be referred to as “the current slide adjustment height for unclamping”.
  • the die clamper 57 is operated to unclamp the current upper die 43. As a result, the current model The upper mold 43 is released from the slide 45.
  • Engage clutch 48 and move slide 45 from bottom dead center to top dead center.
  • the slide adjustment mechanism 56 is operated, and the lower surface of the slide at the bottom dead center of the slide is a height for clamping the upper mold 43 of the next mold (the upper mold 43 placed on the lower mold 44 is clamped. (Adjustable height)
  • the slide adjustment height at this time is referred to as “slide adjustment height for the next clamp”.
  • the slide adjustment height is changed from “the slide adjustment height for the current type unclamp” to “the slide adjustment height for the next type clamp”.
  • the upper mold / lower mold of the current mold is taken out from the mechanical press 40, and the upper mold / lower mold of the next mold is placed on the bolster 42 of the mechanical press 40.
  • Engage clutch 48 and move slide 45 from top dead center to bottom dead center.
  • the die clamper 57 is operated to clamp the upper mold 43 of the next mold. As a result, the upper mold 43 of the next mold is fixed to the slide 45.
  • Engage clutch 48 and move slide 45 from bottom dead center to top dead center.
  • the slide adjustment mechanism 56 Operate the slide adjustment mechanism 56 and adjust it so that the bottom surface of the slide at the bottom dead center of the slide becomes the height for production in the next mold.
  • the slide adjustment height at this time will be referred to as “slide adjustment height for next-generation production”.
  • the slide adjustment height is changed from “slide adjustment height for the next type clamp” to “slide adjustment height for the next type production”.
  • Patent Document 1 discloses a mechanical press having a drive system including a flywheel and a clutch. ing.
  • Patent Document 2 discloses a slide adjustment mechanism that employs a screw mechanism.
  • Patent Documents 3 and 4 disclose mechanical presses that employ a power transmission mechanism in which the slide descends slowly and rises rapidly when the shaft serving as a slide drive source rotates at a constant speed in the negative direction.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2004-34111
  • Patent Document 2 Japanese Utility Model Publication No. 61-24392
  • Patent Document 3 Japanese Patent Publication No. 46-29224
  • Patent Document 4 Japanese Patent Laid-Open No. 2003-320489
  • the conventional mechanical press 40 described above has the following problems when changing the mold.
  • the present invention has been made in view of such problems, and an object of the present invention is to provide a die change method for a press machine and a press machine that can greatly reduce the time required for die change.
  • the die changing method for a press machine and the press machine according to the present invention employ the following means.
  • the present invention transmits the rotary motion of a servo motor as a press drive source as a slide up / down motion via a power transmission mechanism and controls the servo motor so that it can be arbitrarily set within the slide movement range.
  • a method of exchanging dies for a press machine capable of positioning a slide at a position where the upper die is moved to a position where the upper die rests on the lower die.
  • the slide stop position is limited to the top dead center and the bottom dead center, but in the present invention, the press can position the slide at an arbitrary position by controlling the servo motor. Since the machine (servo-driven press machine) is targeted, there is no need to move the slide to the top dead center when replacing the mold. For this reason, since it is only necessary to move the slide within a range sufficient for the mold exchanging work, the time required for moving the slide can be greatly shortened.
  • the press machine has a slide adjustment mechanism for adjusting the die height, and the slide adjustment mechanism is operated to operate the slide.
  • the step of changing the height of the ride adjusting mechanism from the adjusted height for pressing with the original die to the adjusted height for pressing with the next die is characterized.
  • the “original mold” corresponds to the “current mold” (mold before replacement) in the embodiment.
  • the “next mold” is the “next mold” (mold after replacement) in the embodiment.
  • the conventional machine press has to change the die height adjustment position three times (see steps 1, 5, and 9 in Fig. 2).
  • steps 1 and 9 of the conventional mold replacement that only need to be changed to cope with the difference in the mold can be handled by the slide positioning control. Operation can be omitted. Therefore, the time required for the operation of the slide adjustment mechanism can be greatly shortened.
  • the step of changing the height of the slide adjusting mechanism is performed by taking out the upper and lower dies from the press machine, Upper and lower mold In parallel with the step of carrying into the press machine.
  • the power transmission mechanism of the mechanical press repeatedly moves the slide up and down with respect to the rotation of the servo motor in one direction.
  • the amount of movement when the slide is lowered and raised is asymmetric with respect to the rotation angle of the servo motor, and the servo motor includes the movement of the slide among the steps.
  • the slide is moved up and down using a section having a larger movement amount with respect to the rotation angle.
  • the slide movement time can be shortened.
  • the press machine that is powerful in the present invention is capable of releasing a servo motor as a press drive source, a slide in which an upper mold is attached to the lower surface and moving up and down, and the upper mold on the lower surface of the slide.
  • a die clamper to be fixed; a power transmission mechanism that converts the rotary motion of the servo motor into a lifting and lowering motion of the slide; and a control unit that controls at least the servo motor and the die clamper, wherein the control unit controls the servo motor.
  • the press can position the slide at an arbitrary position within the slide movement range, and the control unit moves the slide to a position where the upper mold is placed on the lower mold when the mold is replaced.
  • the upper mold is then released from the slide, and then the slide is moved to a predetermined position until the slide does not reach the top dead center.
  • the upper and lower molds are taken out from the press machine, and after another upper and lower molds are carried into the press machine, the upper mold is fixed to a position for fixing to the slide.
  • the slide motor is lowered, the upper die is fixed to the slide, and then the servo motor and the die clamper are controlled so as to raise the slide to a position where pressing can be started. .
  • the above-mentioned press machine is further provided with a slide adjusting mechanism for adjusting the die height, and the control unit sets the height of the slide adjusting mechanism to the original height when the mold is replaced.
  • Money The slide adjustment mechanism is controlled so as to change from an adjustment height for pressing by a die to an adjustment height for pressing by a next die.
  • control unit performs control for changing the height of the slide adjusting mechanism at the time of replacing the mold from the press machine to the upper and lower molds. This is performed in parallel with the work of taking out the upper and lower molds and bringing them into the press machine.
  • the power transmission mechanism is a mechanism in which the slide repeatedly moves up and down with respect to rotation of the servo motor in one direction, and a movement amount when the slide is lowered and when the slide is raised.
  • the controller is asymmetric with respect to the rotation angle of the servo motor, and the control unit uses a section on the side where the movement amount is large with respect to the rotation angle of the servo motor when the slide is moved during die replacement.
  • the servo motor is controlled to raise and lower the slide.
  • FIG. 1 is a schematic configuration diagram of a mechanical press used for carrying out a conventional mold changing method.
  • FIG. 2 is a diagram illustrating the procedure of a conventional mold changing method.
  • FIG. 3 is a schematic configuration diagram of a servo press used for carrying out the mold exchanging method of the present invention.
  • 4A is a diagram for explaining the positional relationship between top dead center and bottom dead center in the servo press of FIG.
  • 4B is a diagram for explaining the positional relationship between the lower end of the power conversion mechanism and the bottom surface of the slide in the servo press of FIG. 3.
  • FIG. 5 is a diagram for explaining the procedure of the mold exchanging method of the present invention.
  • FIG. 6A is a diagram showing the height of the slide lower surface during production with the current mold according to the mold exchanging method of the present invention. Illustration It is.
  • FIG. 6C is a diagram showing the height of the slide lower surface when the next mold is clamped by the mold exchanging method of the present invention.
  • FIG. 6D is a diagram showing the height of the slide bottom surface during production of the next mold according to the mold exchanging method of the present invention.
  • FIG. 7A is a diagram showing the height of the bottom surface of the slide during production of the current mold by the conventional mold changing method.
  • FIG. 7B is a view showing the height of the slide bottom surface when the current mold is unclamped by the conventional mold changing method.
  • FIG. 7C is a view showing the height of the bottom surface of the slide when the next mold is clamped by the conventional mold changing method.
  • FIG. 7D is a diagram showing the slide bottom surface height during production of the next mold by the conventional mold exchanging method.
  • FIG. 8 is a diagram showing the relationship between the crank angle and the slide displacement in a certain power conversion mechanism. The best mode for carrying out the invention
  • FIG. 3 is a diagram showing a schematic configuration of a press machine that is effective in the present invention.
  • This press machine 1 is a servo-driven press machine (hereinafter referred to as a servo press! /) That can position the slide 4 at an arbitrary position within the slide movement range by controlling the servo motor 3.
  • This servo press 1 is provided with a slide 4 that can be moved up and down above a bolster 8 installed on a bed 6, and an upper mold 10 attached to the lower surface of the slide 4 and the bolster 8
  • the workpiece is configured to be press-formed between the lower molds 12 fixed on the upper side.
  • the slide 4 is provided with a die clamper 14 for releasably fixing the upper mold 10 to the lower surface of the slide 4.
  • the servo press 1 includes a servo motor 3 as a drive source.
  • the rotating motion of the servo motor 3 is converted into a linear motion (lifting motion) by the power conversion mechanism 16.
  • the exchange mechanism 16 can be realized by, for example, a combination of a crankshaft and a link as described in Patent Document 4, a link mechanism as disclosed in Japanese Patent Laid-Open No. 2003-290984, and the like.
  • the rotational position of the servo motor 3 is detected by the rotational position detector 18. Based on this detection data and a conversion formula determined by the mechanism of the power conversion mechanism 16, the position of the lower end of the power conversion mechanism 16 can be calculated. Further, by performing position feedback control as necessary, the rotational position of the servo motor 3 is controlled so that the lower end of the power conversion mechanism 16 can be moved to an arbitrary position.
  • the rotational position detector 18 can be realized by, for example, an optical rotary encoder or a resolver.
  • the power conversion mechanism 16 is connected to the slide 4 via the slide adjustment mechanism 20.
  • the slide adjustment mechanism 20 adjusts the die height by changing the vertical position of the slide 4 at the slide bottom dead center.
  • the slide adjusting mechanism 20 can be realized, for example, by a feed screw type mechanism as disclosed in Patent Document 2 (Japanese Utility Model Publication No. 61-24392).
  • the height of the slide adjustment mechanism 20 can be changed by rotating the slide adjustment mechanism drive motor 22. Thereby, the die height adjustment position can be adjusted. Even if the servo motor 3 does not rotate, the height of the slide 4 can be finely adjusted.
  • the height of the slide adjustment mechanism 20 is measured by the slide adjustment mechanism height measuring instrument 24, and the height of the slide adjustment mechanism 20 can be arbitrarily adjusted by performing position feedback control as necessary. I can do it.
  • the slide adjusting mechanism height measuring device 24 can be realized by, for example, a linear encoder or a linear scale.
  • the control unit 9 controls the servo motor 3, the die clamper 14, and the slide adjustment mechanism 20.
  • the controller 9 controls the servo motor 3 to position the slide 4 at an arbitrary position within the slide movement range.
  • the slide adjustment mechanism drive motor 22 is rotated to adjust the height of the slide adjustment mechanism 20 to a height suitable for press working, and then the servo motor 3
  • the workpiece 4 is pressed by moving the slide 4 up and down through the power conversion mechanism 16 and bringing the upper die 10 and the lower die 12 close to the distance necessary for press molding.
  • the power conversion mechanism 16 As shown in FIG. 4A, by rotating the servo motor 3, the power conversion mechanism 16 The end position varies between a top dead center at the height of Hit from the top surface of bolster 8 and a bottom dead center at the height of H lb from the top surface of bolster 8.
  • the distance from the upper surface of the bolster 8 at the lower end of the power conversion mechanism 16 at a certain time is hi, and the height of the slide adjustment mechanism 20 is h2.
  • the thickness of the slide 4 is set to 0 here for convenience (that is, the lower end of the slide adjusting mechanism 20 and the lower end of the slide 4 coincide here).
  • Hlb ⁇ hl ⁇ Hlt Hlb ⁇ hl ⁇ Hlt.
  • FIG. 5 is a diagram for explaining the procedure of the die changing method for the mechanical press which is effective in the present invention.
  • FIGS. 6A to 6D show changes in the lower surface height of the slide 4 when the mold exchanging method of the present invention is performed
  • FIGS. 7A to 7D show changes in the lower surface of the slide when the conventional mold exchanging method is performed. Is shown.
  • the conventional “power conversion mechanism” in FIGS. 7A to 7D corresponds to the crankshaft 53 and the connecting rod 55 in FIG.
  • current mold mold before replacement
  • next mold mold after replacement
  • the mold exchanging method of the present invention is performed according to the following procedure.
  • the production by the current model is finished, and slide 4 is stopped.
  • the slide adjusting mechanism 20 is adjusted and adjusted so that the bottom surface of the slide 4 at the bottom dead center of the slide 4 becomes a height for producing the current model (the height of the slide adjustment for the current model production). .
  • Step 1 In the mold exchanging method of the present invention, since there is no stage corresponding to Step 1 of the conventional example, the process proceeds to Step 2.
  • the servo motor 3 is rotated and the slide 4 is lowered. At this time, the slide 4 stops at a position where the upper mold 10 just gets on the lower mold 12.
  • the height at which the lower surface of the slide 4 is stopped to unclamp the current mold is H 3uc.
  • the die clamper 14 is operated to unclamp the upper mold 10 of the current type. As a result, the current upper mold 10 is released from the slide 4.
  • the servo motor 3 is rotated, and the slide 4 is raised to a predetermined position where the top dead center is not reached, and is put on standby. Specifically, after unclamping the current mold, the slide 4 and its accessories (not shown) will not interfere with each other when the current mold and the next mold are taken in and out. Raise.
  • slide 4 was raised to the top dead center.
  • the servo motor 3 is controlled so that the slide 4 is raised only to a minimum height that does not interfere with the insertion / extraction of the slide 4 and its accessory force S and the current / next type. Therefore, in the present invention, as compared with the conventional example, the ascending distance of the slide 4, that is, the time required for movement can be shortened.
  • the actual height of Slide 4 to be raised is determined by means such as actual measurement, examination on the drawing, use of CAD software interference check function, etc. That's the power S.
  • the slide adjustment mechanism 20 Under the control of the control unit 9, the slide adjustment mechanism 20 is operated, and the bottom surface of the slide 4 at the bottom dead center of the slide 4 is a height for producing the next mold (slide adjustment height for the next mold production) and Adjust so that As a result of this adjustment, the slide adjustment height is changed from “slide adjustment height for current production” to “slide adjustment height for next production”.
  • the upper mold “lower mold” of the current mold is taken out from the servo press 1 and placed on the bolster 8 of the servo press 1 with the upper mold “lower mold” of the next mold stacked.
  • the height at which the lower surface of the slide is stopped to clamp the next mold is H3cn.
  • H3pn is the height of the bottom surface of the slide at the bottom dead center for production in the next mold.
  • the lower end of the power conversion mechanism 16 starts moving from the top dead center, whereas in the present invention, the position force movement lower than the top dead center is started, so the time required for the movement can be shortened. .
  • the die clamper 14 Under the control of the control unit 9, the die clamper 14 is operated and the upper mold 10 of the next mold is clamped. As a result, the upper mold 10 of the next mold is fixed to the slide 4.
  • Step 9 Under the control of the control unit 9, the servo motor 3 is rotated to raise the slide 4 to a height at which production can be started. [0051] (Step 9)
  • the slide adjustment mechanism 20 is operated so that the height of the slide adjustment mechanism 20 is h2pn.
  • the operation of the slide adjustment mechanism 20 can be omitted. Therefore, in the mold exchanging method of the present invention, there is no stage corresponding to Step 9 of the conventional example.
  • the step of changing the slide adjustment height is performed in parallel with the step of taking out the upper and lower molds from the press machine and bringing the other upper and lower molds into the press machine. Therefore, the replacement work can be progressed and the mold can be replaced quickly.
  • Patent Document 4 As shown in Patent Document 4, for example, as the power conversion mechanism 16, the slide repeatedly moves up and down with respect to the rotation of the motor in one direction, and the amount of movement when the slide is lowered and when the slide is raised is as follows. Some are asymmetric with respect to the rotation angle of the motor.
  • the mechanism disclosed in Patent Document 4 includes a crankshaft and a link mechanism. The relationship between the crank angle and the slide 4 displacement in such a power conversion mechanism is, for example, as shown in FIG. In Figure 8, 0.
  • the slide movement amount is larger in the section of ⁇ to 360 ° than in the section of ⁇ .
  • the servo motor 3 in steps 2, 4, 6, and 8 including the movement of the slide 4, the servo motor 3 is rotated in the forward and reverse directions so that the rotation angle of the servo motor 3 is reduced.
  • Slide 4 is moved up and down using the section with the larger amount of movement. In this way, the time required for moving the slide 4 can be shortened, so that the mold replacement work can be speeded up.
  • the lower end position of the power conversion mechanism 16 is measured by detecting the rotation angle of the servo motor 3, but the lower end position of the power conversion mechanism 16 is measured using a linear encoder linear scale. You can measure it.
  • the force obtained by measuring the height of the slide adjustment mechanism 20 using a linear encoder or linear scale is obtained by measuring the height of the slide adjustment mechanism 20 using a linear encoder or linear scale.
  • the rotation angle of the slide adjustment mechanism drive motor 22 is measured by a rotary encoder / resolver, and the motor rotation angle determined by the mechanism is determined.
  • the height may be calculated using the relationship between the height and the height.
  • the slide adjustment mechanism 20 may be driven by a 1S hydraulic cylinder or a pneumatic cylinder whose height is adjusted by driving the motor.
  • the force obtained by adjusting the die height in step 5 may be performed at another stage as necessary. In this case, it is necessary to determine the amount of movement of slide 4 in consideration of die height adjustment in other steps.
  • step 6 the height of the slide bottom surface at the bottom dead center for production on the current model is determined.
  • the lower end position of the power conversion mechanism may be moved by correcting the difference from the height of the bottom surface of the slide at the bottom dead center for production in the next model. In this case, even during production, the lower end of the power conversion mechanism does not reach bottom dead center, but the servo motor rotation direction is reversed above the bottom dead center to raise the slide. Many.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Presses (AREA)
  • Press Drives And Press Lines (AREA)
  • Presses And Accessory Devices Thereof (AREA)
  • Mounting, Exchange, And Manufacturing Of Dies (AREA)

Abstract

[PROBLEMS] To provide a method for changing the die of a press machine by which the time required for changing the die can be shortened sharply. [MEANS FOR SOLVING PROBLEMS] In a press machine (servo drive press machine) where a slide can be positioned at an arbitrary position by controlling a servo motor, the time required for moving the slide is shortened by moving the slide within a range required for changing the die. Furthermore, work for changing the die is quickened by performing positioning control of the slide not through operation of a slide regulation mechanism but through control of the servo motor and moving the slide to a height suitable for changing the die, thereby omitting operation of the slide regulation mechanism.

Description

明 細 書  Specification
プレス機械の金型交換方法及びプレス機械  Mold changing method for press machine and press machine
発明の背景  Background of the Invention
[0001] 発明の技術分野 [0001] Technical Field of the Invention
本発明は、プレス機械の金型交換方法及びプレス機械に関するものである。  The present invention relates to a die changing method for a press machine and a press machine.
[0002] プレス機械は圧力の発生機構により分類されており、液圧を使用する「液圧プレス」 と、機械的な駆動力による「機械プレス」に大別すること力 Sできる。一般に、機械プレス は、液圧プレスよりも生産性が高ぐ保守も容易であることから、現在、プレス加工の 大部分は機械プレスで行なわれてレ、る。  [0002] Press machines are classified according to the pressure generation mechanism, and can be broadly classified into “hydraulic press” using hydraulic pressure and “mechanical press” using mechanical driving force. In general, mechanical presses are more productive and easier to maintain than hydraulic presses, so most of the press work is currently done with mechanical presses.
[0003] 図 1は、従来の一般的な機械プレス 40の概略構成を示す図である。図 1に示すよう に、機械プレス 40の下部にはベッド 41が配置され、ベッド 41の上には下金型 44を 載置 '固定するためのボルスタ 42が設置されている。ボルスタ 42の上方には、スライ ド 45が昇降可能に設けられている。スライド 45の下面にはダイクランパ 57により上金 型 43が固定されるようになっている。機械プレス 40の上部にはドライブシャフト 46が 回転可能に支持されている。ドライブシャフト 46の一端側には、フライホイール 47及 びクラッチ 48が配設されて!/、る。  FIG. 1 is a diagram showing a schematic configuration of a conventional general mechanical press 40. As shown in FIG. 1, a bed 41 is disposed at the lower part of the mechanical press 40, and a bolster 42 for placing and fixing the lower mold 44 is disposed on the bed 41. Above the bolster 42, a slide 45 is provided so as to be movable up and down. The upper mold 43 is fixed to the lower surface of the slide 45 by a die clamper 57. A drive shaft 46 is rotatably supported on the upper part of the mechanical press 40. A flywheel 47 and a clutch 48 are arranged at one end of the drive shaft 46! /.
[0004] フライホイール 47と、メインモータ 49の出力軸に装着されたプーリ 50との間には、タ イミングベルト 51が巻装されている。メインモータ 49の回転駆動により、フライホイ一 ル 47に運動エネルギを蓄積し、このエネルギをクラッチ 48を介して放出しドライブシ ャフト 46を回転駆動する。ドライブシャフト 46にはピニオンギヤ 52が取り付けられて おり、ピニオンギヤ 52はクランク軸 53に取り付けられたメインギヤ 54と嚙合している。 クランク軸 53の偏心部 53aにはコンロッド 55が回転可能に連結されている。コンロッド 55はスライド調整機構 56を介してスライド 45に連結されている。スライド調整機構 56 は、スライド下死点におけるスライド 45の上下位置を変化させてダイハイト (スライド 4 5が下死点にあるときのスライド 45下面とボルスタ上面の間の距離）を調整するもので ある。  A timing belt 51 is wound between the flywheel 47 and a pulley 50 attached to the output shaft of the main motor 49. By rotating the main motor 49, kinetic energy is stored in the flywheel 47, and this energy is released through the clutch 48 to drive the drive shaft 46. A pinion gear 52 is attached to the drive shaft 46, and the pinion gear 52 is meshed with a main gear 54 attached to the crankshaft 53. A connecting rod 55 is rotatably connected to the eccentric portion 53a of the crankshaft 53. The connecting rod 55 is connected to the slide 45 via the slide adjusting mechanism 56. The slide adjustment mechanism 56 adjusts the die height (the distance between the lower surface of the slide 45 and the upper surface of the bolster when the slide 45 is at the bottom dead center) by changing the vertical position of the slide 45 at the slide bottom dead center. .
[0005] 上記のように構成された機械プレス 40では、メインモータ 49の回転駆動によりフラ ィホイール 47を回転させて運動エネルギを蓄積し、クラッチ 48を接続状態にするとフ ライホイール 47の運動エネルギが解放されてドライブシャフト 46、ピニオンギヤ 52、メ インギヤ 54を介して動力が伝達し、さらにクランク軸 53及びコンロッド 55を介して回 転運動が直線運動に変換されることによりスライド 45が上死点、下死点間を昇降動 する。また、上記のように構成された機械プレス 40では、スライド 45の運動をクラッチ 48で制御することから、スライド 45を正規に停止できる位置は、通常、上死点と下死 点に限定されている。フライホイール 47は通常一方向に回転し、回転方向の変化は 困難である。 [0005] In the mechanical press 40 configured as described above, the kinetic energy is accumulated by rotating the flywheel 47 by the rotational drive of the main motor 49, and the clutch 48 is engaged when the clutch 48 is engaged. The kinetic energy of the lie wheel 47 is released, the power is transmitted through the drive shaft 46, the pinion gear 52, and the main gear 54. Slide 45 moves up and down between top dead center and bottom dead center. Further, in the mechanical press 40 configured as described above, since the movement of the slide 45 is controlled by the clutch 48, the position where the slide 45 can be stopped normally is normally limited to the top dead center and the bottom dead center. Yes. The flywheel 47 usually rotates in one direction, and the direction of rotation is difficult to change.
[0006] 機械プレス 40では、生産すべきプレス成型品の種類に応じて金型を使用するため 、金型交換が行なわれる。図 2を参照して、従来の機械プレス 40の金型交換の手順 を説明する。以下では、現在の金型（交換前の金型）を「現型」といい、次の金型（交 換後の金型）を「次型」という。  [0006] In the mechanical press 40, since a die is used according to the type of press-molded product to be produced, the die is exchanged. With reference to FIG. 2, the procedure for changing the mold of the conventional mechanical press 40 will be described. In the following, the current mold (mold before replacement) is called “current mold”, and the next mold (mold after replacement) is called “next mold”.
[0007] (開始）  [0007] (Start)
現型による生産を終了し、スライド 45は上死点で停止している。このとき、スライド調 整機構 56は、スライド下死点におけるスライド下面が現型で生産するための高さとな るように、調整されている。以下、このときのスライド調整高さを、「現型生産用スライド 調整高さ」という。  Production with the current model has ended, and slide 45 has stopped at top dead center. At this time, the slide adjusting mechanism 56 is adjusted so that the bottom surface of the slide at the bottom dead center of the slide becomes a height for producing the current model. Hereinafter, the slide adjustment height at this time is referred to as “the slide adjustment height for current production”.
[0008] (ステップ 1) [0008] (Step 1)
スライド調整機構 56を動作させ、スライド下死点におけるスライド下面が現型の上金 型 43をアンクランプするための高さ（上金型 43を下金型 44の上に載せて上金型 43 をアンクランプするのに適した高さ）となるように、調整する。以下、このときのスライド 調整高さを、「現型アンクランプ用スライド調整高さ」とレ、う。  The slide adjustment mechanism 56 is operated so that the bottom surface of the slide at the bottom dead center of the slide is the height for unclamping the upper mold 43 (the upper mold 43 is placed on the lower mold 44 and the upper mold 43 To a height suitable for unclamping). Hereinafter, the slide adjustment height at this time will be referred to as “the current slide adjustment height for unclamping”.
この調整によりスライド調整高さは「現型生産用スライド調整高さ」から「現型アンクラ ンプ用スライド調整高さ」に変更される。  As a result of this adjustment, the slide adjustment height is changed from “current slide adjustment height for production” to “slide adjustment height for current unclamp”.
[0009] (ステップ 2) [0009] (Step 2)
クラッチ 48を接続し、スライド 45を上死点から下死点へ移動させる。このときスライド 45は、下金型 44の上に上金型 43が丁度乗る位置で停止する。  Engage clutch 48 and move slide 45 from top dead center to bottom dead center. At this time, the slide 45 stops at a position where the upper mold 43 just gets on the lower mold 44.
(ステップ 3)  (Step 3)
ダイクランパ 57を動作させ、現型の上金型 43をアンクランプする。これにより、現型 の上金型 43がスライド 45から解放される。 The die clamper 57 is operated to unclamp the current upper die 43. As a result, the current model The upper mold 43 is released from the slide 45.
(ステップ 4)  (Step 4)
クラッチ 48を接続し、スライド 45を下死点から上死点へ移動させる。  Engage clutch 48 and move slide 45 from bottom dead center to top dead center.
[0010] (ステップ 5) [0010] (Step 5)
スライド調整機構 56を動作させ、スライド下死点におけるスライド下面が次型の上金 型 43をクランプするための高さ（下金型 44の上に載置された上金型 43をクランプす るのに適した高さ）となるように、調整する。このときのスライド調整高さを「次型クラン プ用スライド調整高さ」とレ、う。この調整によりスライド調整高さは「現型アンクランプ用 スライド調整高さ」から「次型クランプ用スライド調整高さ」に変更される。  The slide adjustment mechanism 56 is operated, and the lower surface of the slide at the bottom dead center of the slide is a height for clamping the upper mold 43 of the next mold (the upper mold 43 placed on the lower mold 44 is clamped. (Adjustable height) The slide adjustment height at this time is referred to as “slide adjustment height for the next clamp”. By this adjustment, the slide adjustment height is changed from “the slide adjustment height for the current type unclamp” to “the slide adjustment height for the next type clamp”.
並行して、現型の上金型 ·下金型を機械プレス 40から取り出し、次型の上金型'下 金型を機械プレス 40のボルスタ 42上に載置する。  At the same time, the upper mold / lower mold of the current mold is taken out from the mechanical press 40, and the upper mold / lower mold of the next mold is placed on the bolster 42 of the mechanical press 40.
[0011] (ステップ 6) [0011] (Step 6)
クラッチ 48を接続し、スライド 45を上死点から下死点へ移動させる。  Engage clutch 48 and move slide 45 from top dead center to bottom dead center.
(ステップ 7)  (Step 7)
ダイクランパ 57を動作させ、次型の上金型 43をクランプする。これにより、次型の上 金型 43がスライド 45に固定される。  The die clamper 57 is operated to clamp the upper mold 43 of the next mold. As a result, the upper mold 43 of the next mold is fixed to the slide 45.
(ステップ 8)  (Step 8)
クラッチ 48を接続し、スライド 45を下死点から上死点へ移動させる。  Engage clutch 48 and move slide 45 from bottom dead center to top dead center.
[0012] (ステップ 9) [0012] (Step 9)
スライド調整機構 56を動作させ、スライド下死点におけるスライド下面が次型で生産 するための高さとなるように、調整する。以下、このときのスライド調整高さを「次型生 産用スライド調整高さ」とレ、う。この調整によりスライド調整高さは「次型クランプ用スラ イド調整高さ」から「次型生産用スライド調整高さ」に変更される。  Operate the slide adjustment mechanism 56 and adjust it so that the bottom surface of the slide at the bottom dead center of the slide becomes the height for production in the next mold. Hereinafter, the slide adjustment height at this time will be referred to as “slide adjustment height for next-generation production”. As a result of this adjustment, the slide adjustment height is changed from “slide adjustment height for the next type clamp” to “slide adjustment height for the next type production”.
[0013] (終了） [0013] (End)
次型による生産が可能になる。  Production by the next mold becomes possible.
[0014] このような機械プレスに関連した従来技術を示すものとしては、下記特許文献;!〜 4 力 sある。 [0014] The following patent documents;! To 4 force s are shown as conventional techniques related to such a mechanical press.
特許文献 1は、フライホイールとクラッチを含む駆動系を備えた機械プレスを開示し ている。 Patent Document 1 discloses a mechanical press having a drive system including a flywheel and a clutch. ing.
特許文献 2は、ネジ機構を採用したスライド調整機構を開示している。  Patent Document 2 discloses a slide adjustment mechanism that employs a screw mechanism.
特許文献 3、 4は、スライド駆動源となるシャフトがー方向に一定速度で回転するとき にスライドの下降がゆっくりで上昇が速い動力伝達機構を採用した機械プレスを開示 している。  Patent Documents 3 and 4 disclose mechanical presses that employ a power transmission mechanism in which the slide descends slowly and rises rapidly when the shaft serving as a slide drive source rotates at a constant speed in the negative direction.
[0015] 特許文献 1 :特開 2004— 34111号公報  Patent Document 1: Japanese Patent Application Laid-Open No. 2004-34111
特許文献 2：実公昭 61— 24392号公報  Patent Document 2: Japanese Utility Model Publication No. 61-24392
特許文献 3：特公昭 46— 29224号公報  Patent Document 3: Japanese Patent Publication No. 46-29224
特許文献 4 :特開 2003— 320489号公報  Patent Document 4: Japanese Patent Laid-Open No. 2003-320489
[0016] 上述した従来の機械プレス 40では、金型交換に際して以下のような問題があった。 [0016] The conventional mechanical press 40 described above has the following problems when changing the mold.
(1)スライド 45が上死点と下死点との間を何度も往復するため、この往復移動に時間 を要する。  (1) Since the slide 45 reciprocates between the top dead center and the bottom dead center many times, this reciprocating movement takes time.
(2)スライド調整機構 56の調整機構としては、上記特許文献 2に示されたようなネジ 機構が一般的に採用されているが、かかるネジ機構は移動速度が極めて遅いため、 調整時間が長く掛かる。  (2) As the adjustment mechanism of the slide adjustment mechanism 56, a screw mechanism such as that shown in Patent Document 2 is generally adopted. However, since the screw mechanism has a very slow moving speed, the adjustment time is long. It takes.
(3)上記特許文献 3、 4のような動力伝達機構を採用したものでは、金型交換のため にスライド 45を上昇.下降させるとき、スライド 45の下降は遅いモーションとなってしま い、スライド 45の移動に時間を要する。  (3) In the case where the power transmission mechanism as described in Patent Documents 3 and 4 above is adopted, when the slide 45 is raised and lowered for mold replacement, the slide 45 descends with a slow motion. It takes time to move 45.
発明の要約  Summary of invention
[0017] 本発明はこのような問題に鑑みてなされたものであり、金型交換に要する時間を大 幅に短縮することができるプレス機械の金型交換方法及びプレス機械を提供すること を目的とする。  [0017] The present invention has been made in view of such problems, and an object of the present invention is to provide a die change method for a press machine and a press machine that can greatly reduce the time required for die change. And
[0018] 上述した課題を解決するため、本発明にかかるプレス機械の金型交換方法及びプ レス機械は、以下の手段を採用する。  [0018] In order to solve the above-described problems, the die changing method for a press machine and the press machine according to the present invention employ the following means.
(1)すなわち、本発明は、プレス駆動源であるサーボモータの回転運動を動力伝達 機構を介してスライドの昇降運動として伝達し、前記サーボモータを制御することによ りスライド移動範囲内で任意の位置にスライドを位置決め可能なプレス機械の金型交 換方法であって、上金型が下金型の上に載る位置に前記スライドを移動するステップ と、前記スライドから上金型を解放するステップと、前記スライドを上死点に達しない 所定の位置まで上昇させて待機させるステップと、前記プレス機械から上下の金型を 取り出して、別の上下の金型を前記プレス機械に搬入するステップと、上金型をスラ イドに固定するための位置に前記スライドを下降させるステップと、前記スライドに上 金型を固定するステップと、プレス加工の開始が可能な位置まで前記スライドを上昇 させるステップと、を含むことを特徴とする。 (1) That is, the present invention transmits the rotary motion of a servo motor as a press drive source as a slide up / down motion via a power transmission mechanism and controls the servo motor so that it can be arbitrarily set within the slide movement range. A method of exchanging dies for a press machine capable of positioning a slide at a position where the upper die is moved to a position where the upper die rests on the lower die. Releasing the upper mold from the slide; raising the slide to a predetermined position that does not reach top dead center; waiting the upper mold; and taking out the upper and lower molds from the press machine; Loading the mold into the press machine, lowering the slide to a position for fixing the upper mold to the slide, fixing the upper mold to the slide, and starting press work And raising the slide to a position where possible.
[0019] 上述した従来の機械プレスではスライド停止位置が上死点と下死点に限定されて いたが、本発明では、サーボモータを制御することにより任意の位置にスライドを位置 決め可能なプレス機械（サーボ駆動式プレス機械）を対象とするため、金型交換にお いてスライドを上死点まで移動させる必要が無い。このため、金型交換作業に必要十 分な範囲でスライドを移動させればよいので、スライドの移動に要する時間を大幅に 短縮できる。 [0019] In the conventional mechanical press described above, the slide stop position is limited to the top dead center and the bottom dead center, but in the present invention, the press can position the slide at an arbitrary position by controlling the servo motor. Since the machine (servo-driven press machine) is targeted, there is no need to move the slide to the top dead center when replacing the mold. For this reason, since it is only necessary to move the slide within a range sufficient for the mold exchanging work, the time required for moving the slide can be greatly shortened.
[0020] (2)また、上記のプレス機械の金型交換方法にお!/、て、前記プレス機械はダイハイト を調整するスライド調整機構を有するものであり、該スライド調整機構を動作させ、ス ライド調整機構の高さを、元の金型によりプレス加工するための調整高さから、次の 金型によりプレス加工するための調整高さに変更するステップを含む、ことを特徴と する。  [0020] (2) Further, in the above-described die replacement method of the press machine, the press machine has a slide adjustment mechanism for adjusting the die height, and the slide adjustment mechanism is operated to operate the slide. The step of changing the height of the ride adjusting mechanism from the adjusted height for pressing with the original die to the adjusted height for pressing with the next die is characterized.
なお、上記「元の金型」は、実施形態における「現型」（交換前の金型）がこれに該 当する。上記「次の金型」は、実施形態における「次型」（交換後の金型）がこれに該 当する。  The “original mold” corresponds to the “current mold” (mold before replacement) in the embodiment. The “next mold” is the “next mold” (mold after replacement) in the embodiment.
[0021] スライド調整機構を有するプレス機械の場合、従来の機械プレスでは、ダイハイト調 整位置の変更を 3回行なう必要があった（図 2のステップ 1 , 5, 9を参照）。これに対し 、本発明では、金型の相違に対応するための変更のみを行なえばよぐ従来の金型 交換のステップ 1 , 9については、スライドの位置決め制御によって対応できるため、 スライド調整機構の動作を省略できる。したがって、スライド調整機構の動作に要する 時間を大幅に短縮することができる。  [0021] In the case of a press machine having a slide adjustment mechanism, the conventional machine press has to change the die height adjustment position three times (see steps 1, 5, and 9 in Fig. 2). On the other hand, in the present invention, steps 1 and 9 of the conventional mold replacement that only need to be changed to cope with the difference in the mold can be handled by the slide positioning control. Operation can be omitted. Therefore, the time required for the operation of the slide adjustment mechanism can be greatly shortened.
[0022] (3)また、上記のプレス機械の金型交換方法にお!/、て、前記スライド調整機構の高さ を変更するステップを、前記プレス機械から上下の金型を取り出して別の上下の金型 を前記プレス機械に搬入するステップと並行して行なう、ことを特徴とする。 [0022] (3) Further, in the above-described die changing method of the press machine, the step of changing the height of the slide adjusting mechanism is performed by taking out the upper and lower dies from the press machine, Upper and lower mold In parallel with the step of carrying into the press machine.
[0023] スライド調整高さを変更するステップを、プレス機械から上下の金型を取り出して別 の上下の金型をプレス機械に搬入するステップと並行して行なうことにより、効率的に 交換作業を進行し、金型交換を迅速に行なうことができる。  [0023] By performing the step of changing the slide adjustment height in parallel with the step of taking out the upper and lower molds from the press machine and loading the other upper and lower molds into the press machine, the exchange work can be performed efficiently. It is possible to change the mold quickly.
[0024] (4)また、上記のプレス機械の金型交換方法にお!/、て、前記機械プレスの動力伝達 機構は、前記サーボモータの一方向の回転に対して前記スライドが昇降を繰り返す 機構であって前記スライドの下降時と上昇時の移動量が前記サーボモータの回転角 に対して非対称となるものであり、前記各ステップのうち前記スライドの移動を含むも のにおいて、前記サーボモータの回転角に対して移動量が大きい側の区間を利用し て前記スライドを昇降させる、ことを特徴とする。  [0024] (4) Further, in the above-described die changing method of the press machine, the power transmission mechanism of the mechanical press repeatedly moves the slide up and down with respect to the rotation of the servo motor in one direction. In the mechanism, the amount of movement when the slide is lowered and raised is asymmetric with respect to the rotation angle of the servo motor, and the servo motor includes the movement of the slide among the steps. The slide is moved up and down using a section having a larger movement amount with respect to the rotation angle.
[0025] このように、サーボモータの回転角に対して移動量が大きい側の区間を利用してス ライドを昇降させるので、スライドの移動時間を短縮することができる。  As described above, since the slide is moved up and down using the section having the larger movement amount with respect to the rotation angle of the servomotor, the slide movement time can be shortened.
[0026] また、本発明に力、かるプレス機械は、プレス駆動源であるサーボモータと、下面に 上金型が取り付けられ昇降運動するスライドと、上金型を前記スライドの下面に解放 可能に固定するダイクランパと、前記サーボモータの回転運動を前記スライドの昇降 運動に変換する動力伝達機構と、少なくとも前記サーボモータ及び前記ダイクランパ を制御する制御部とを備え、該制御部が前記サーボモータを制御することによりスラ イド移動範囲内で任意の位置にスライドを位置決め可能なプレス機械であって、前記 制御部は、金型交換時に、上金型が下金型の上に載る位置に前記スライドを移動さ せ、次いで前記スライドから上金型を解放し、次いで前記スライドを上死点に達しな V、所定の位置まで上昇させて待機させるように前記サーボモータ及び前記ダイクラン パを制御し、前記プレス機械から上下の金型が取り出され、別の上下の金型が前記 プレス機械に搬入された後に、上金型をスライドに固定するための位置に前記スライ ドを下降させ、次いで前記スライドに上金型を固定し、次いでプレス加工の開始が可 能な位置まで前記スライドを上昇させるように前記サーボモータと前記ダイクランパを 制御する、ことを特徴とする。  [0026] In addition, the press machine that is powerful in the present invention is capable of releasing a servo motor as a press drive source, a slide in which an upper mold is attached to the lower surface and moving up and down, and the upper mold on the lower surface of the slide. A die clamper to be fixed; a power transmission mechanism that converts the rotary motion of the servo motor into a lifting and lowering motion of the slide; and a control unit that controls at least the servo motor and the die clamper, wherein the control unit controls the servo motor. The press can position the slide at an arbitrary position within the slide movement range, and the control unit moves the slide to a position where the upper mold is placed on the lower mold when the mold is replaced. The upper mold is then released from the slide, and then the slide is moved to a predetermined position until the slide does not reach the top dead center. After controlling the vo-motor and the die clamper, the upper and lower molds are taken out from the press machine, and after another upper and lower molds are carried into the press machine, the upper mold is fixed to a position for fixing to the slide. The slide motor is lowered, the upper die is fixed to the slide, and then the servo motor and the die clamper are controlled so as to raise the slide to a position where pressing can be started. .
[0027] また、上記のプレス機械にお!/、て、更に、ダイハイトを調整するスライド調整機構を 備え、前記制御部は、前記金型交換時に、前記スライド調整機構の高さを、元の金 型によりプレス加工するための調整高さから、次の金型によりプレス加工するための 調整高さに変更するように前記スライド調整機構を制御する、ことを特徴とする。 [0027] In addition, the above-mentioned press machine is further provided with a slide adjusting mechanism for adjusting the die height, and the control unit sets the height of the slide adjusting mechanism to the original height when the mold is replaced. Money The slide adjustment mechanism is controlled so as to change from an adjustment height for pressing by a die to an adjustment height for pressing by a next die.
[0028] また、上記のプレス機械にお!/、て、前記制御部は、前記金型交換時における前記 スライド調整機構の高さを変更するための制御を、前記プレス機械から上下の金型が 取り出されて別の上下の金型が前記プレス機械に搬入される作業と並行して行なう、 ことを特徴とする。 [0028] Further, in the above press machine, the control unit performs control for changing the height of the slide adjusting mechanism at the time of replacing the mold from the press machine to the upper and lower molds. This is performed in parallel with the work of taking out the upper and lower molds and bringing them into the press machine.
[0029] また、上記のプレス機械において、前記動力伝達機構は、前記サーボモータの一 方向の回転に対して前記スライドが昇降を繰り返す機構であって前記スライドの下降 時と上昇時の移動量が前記サーボモータの回転角に対して非対称となるものであり 、前記制御部は、金型交換時のスライドの移動時に、前記サーボモータの回転角に 対して移動量が大きい側の区間を利用して前記スライドを昇降させるように前記サー ボモータを制御する、ことを特徴とする。  [0029] Further, in the press machine, the power transmission mechanism is a mechanism in which the slide repeatedly moves up and down with respect to rotation of the servo motor in one direction, and a movement amount when the slide is lowered and when the slide is raised. The controller is asymmetric with respect to the rotation angle of the servo motor, and the control unit uses a section on the side where the movement amount is large with respect to the rotation angle of the servo motor when the slide is moved during die replacement. The servo motor is controlled to raise and lower the slide.
[0030] このようなプレス機械により、上記のプレス機械の金型交換方法を実施することがで きる。  [0030] With such a press machine, the above-described die change method for the press machine can be carried out.
[0031] 本発明によれば、金型交換に要する時間を大幅に短縮することができるという優れ た効果が得られる。  [0031] According to the present invention, it is possible to obtain an excellent effect that the time required for mold replacement can be significantly shortened.
図面の簡単な説明  Brief Description of Drawings
[0032] [図 1]従来例の金型交換方法の実施に使用する機械プレスの概略構成図である。  FIG. 1 is a schematic configuration diagram of a mechanical press used for carrying out a conventional mold changing method.
[図 2]従来例の金型交換方法の手順を説明する図である。  FIG. 2 is a diagram illustrating the procedure of a conventional mold changing method.
[図 3]本発明の金型交換方法の実施に使用するサーボプレスの概略構成図である。  FIG. 3 is a schematic configuration diagram of a servo press used for carrying out the mold exchanging method of the present invention.
[図 4A]図 3のサーボプレスにおける上死点と下死点の位置関係を説明する図である  4A is a diagram for explaining the positional relationship between top dead center and bottom dead center in the servo press of FIG.
[図 4B]図 3のサーボプレスにおける動力変換機構の下端とスライド下面の位置関係 を説明する図である。 4B is a diagram for explaining the positional relationship between the lower end of the power conversion mechanism and the bottom surface of the slide in the servo press of FIG. 3.
[図 5]本発明の金型交換方法の手順を説明する図である。  FIG. 5 is a diagram for explaining the procedure of the mold exchanging method of the present invention.
[図 6A]本発明の金型交換方法による現型で生産時のスライド下面高さを示す図であ [図 6B]本発明の金型交換方法による現型アンクランプ時のスライド下面高さを示す図 である。 FIG. 6A is a diagram showing the height of the slide lower surface during production with the current mold according to the mold exchanging method of the present invention. Illustration It is.
[図 6C]本発明の金型交換方法による次型クランプ時のスライド下面高さを示す図で ある。  FIG. 6C is a diagram showing the height of the slide lower surface when the next mold is clamped by the mold exchanging method of the present invention.
[図 6D]本発明の金型交換方法による次型で生産時のスライド下面高さを示す図であ  FIG. 6D is a diagram showing the height of the slide bottom surface during production of the next mold according to the mold exchanging method of the present invention.
[図 7A]従来例の金型交換方法による現型で生産時のスライド下面高さを示す図であ FIG. 7A is a diagram showing the height of the bottom surface of the slide during production of the current mold by the conventional mold changing method.
[図 7B]従来例の金型交換方法による現型アンクランプ時のスライド下面高さを示す図 である。 FIG. 7B is a view showing the height of the slide bottom surface when the current mold is unclamped by the conventional mold changing method.
[図 7C]従来例の金型交換方法による次型クランプ時のスライド下面高さを示す図で ある。  FIG. 7C is a view showing the height of the bottom surface of the slide when the next mold is clamped by the conventional mold changing method.
[図 7D]従来例の金型交換方法による次型で生産時のスライド下面高さを示す図であ [図 8]ある種の動力変換機構におけるクランク角とスライド変位との関係を示す図であ 発明を実施するための最良の形態  FIG. 7D is a diagram showing the slide bottom surface height during production of the next mold by the conventional mold exchanging method. FIG. 8 is a diagram showing the relationship between the crank angle and the slide displacement in a certain power conversion mechanism. The best mode for carrying out the invention
[0033] 以下、本発明の好ましい実施形態を添付図面に基づいて詳細に説明する。なお、 各図において共通する部分には同一の符号を付し、重複した説明を省略する。  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.
[0034] 図 3は、本発明に力、かるプレス機械の概略構成を示す図である。このプレス機械 1 は、サーボモータ 3を制御することによりスライド移動範囲内で任意の位置にスライド 4 を位置決め可能なサーボ駆動式プレス機械（以下、サーボプレスと!/、う）である。 このサーボプレス 1は、ベッド 6上に設置されたボルスタ 8の上方に、昇降自在なスラ イド 4が設けられていて、このスライド 4の下面に取り付けられた上金型 10と、前記ボ ルスタ 8上に固定された下金型 12の間でワークをプレス成形するように構成されてい る。スライド 4には、上金型 10をスライド 4下面に解放可能に固定するダイクランパ 14 が設けられている。  [0034] FIG. 3 is a diagram showing a schematic configuration of a press machine that is effective in the present invention. This press machine 1 is a servo-driven press machine (hereinafter referred to as a servo press! /) That can position the slide 4 at an arbitrary position within the slide movement range by controlling the servo motor 3. This servo press 1 is provided with a slide 4 that can be moved up and down above a bolster 8 installed on a bed 6, and an upper mold 10 attached to the lower surface of the slide 4 and the bolster 8 The workpiece is configured to be press-formed between the lower molds 12 fixed on the upper side. The slide 4 is provided with a die clamper 14 for releasably fixing the upper mold 10 to the lower surface of the slide 4.
[0035] サーボプレス 1は、サーボモータ 3を駆動源として備えている。サーボモータ 3の回 転運動は、動力変換機構 16により直線運動（昇降運動）に変換される。この動力変 換機構 16は、例えば、上記特許文献 4のようなクランク軸とリンクの組み合わせによる もの、特開 2003— 290984号公報のようなリンク機構、などによって実現できる。 The servo press 1 includes a servo motor 3 as a drive source. The rotating motion of the servo motor 3 is converted into a linear motion (lifting motion) by the power conversion mechanism 16. This power change The exchange mechanism 16 can be realized by, for example, a combination of a crankshaft and a link as described in Patent Document 4, a link mechanism as disclosed in Japanese Patent Laid-Open No. 2003-290984, and the like.
[0036] サーボモータ 3の回転位置は回転位置検出器 18で検出される。この検出データと 、動力変換機構 16の機構によって決まる変換式に基づいて、動力変換機構 16の下 端の位置を計算することができる。また、必要に応じて位置フィードバック制御を行う ことにより、サーボモータ 3の回転位置を制御して、動力変換機構 16の下端を任意の 位置へ動かすことができるようになつている。回転位置検出器 18は、例えば、光学式 ロータリーエンコーダゃレゾルバなどによって実現できる。 The rotational position of the servo motor 3 is detected by the rotational position detector 18. Based on this detection data and a conversion formula determined by the mechanism of the power conversion mechanism 16, the position of the lower end of the power conversion mechanism 16 can be calculated. Further, by performing position feedback control as necessary, the rotational position of the servo motor 3 is controlled so that the lower end of the power conversion mechanism 16 can be moved to an arbitrary position. The rotational position detector 18 can be realized by, for example, an optical rotary encoder or a resolver.
[0037] 動力変換機構 16は、スライド調整機構 20を介してスライド 4に連結されている。スラ イド調整機構 20は、スライド下死点におけるスライド 4の上下位置を変化させてダイハ イトを調整するものである。スライド調整機構 20は、例えば、上記特許文献 2 (実公昭 61— 24392号公報）に示されているような送りねじ方式の機構によって実現できる。 スライド調整機構 20の高さは、スライド調整機構駆動モータ 22を回転させることにより 変化させること力 Sできる。これによりダイハイト調整位置を調整できる。サーボモータ 3 が回転しなくてもスライド 4の高さを微調整することができる。  The power conversion mechanism 16 is connected to the slide 4 via the slide adjustment mechanism 20. The slide adjustment mechanism 20 adjusts the die height by changing the vertical position of the slide 4 at the slide bottom dead center. The slide adjusting mechanism 20 can be realized, for example, by a feed screw type mechanism as disclosed in Patent Document 2 (Japanese Utility Model Publication No. 61-24392). The height of the slide adjustment mechanism 20 can be changed by rotating the slide adjustment mechanism drive motor 22. Thereby, the die height adjustment position can be adjusted. Even if the servo motor 3 does not rotate, the height of the slide 4 can be finely adjusted.
[0038] スライド調整機構 20の高さは、スライド調整機構高さ計測器 24により計測され、必 要に応じ位置フィードバック制御を行うことにより、スライド調整機構 20の高さを任意 に調整することができるようになつている。スライド調整機構高さ計測器 24は、例えば 、リニアエンコーダやリニアスケールによって実現できる。  [0038] The height of the slide adjustment mechanism 20 is measured by the slide adjustment mechanism height measuring instrument 24, and the height of the slide adjustment mechanism 20 can be arbitrarily adjusted by performing position feedback control as necessary. I can do it. The slide adjusting mechanism height measuring device 24 can be realized by, for example, a linear encoder or a linear scale.
制御部 9は、サーボモータ 3、ダイクランパ 14及びスライド調整機構 20を制御する。 この制御部 9がサーボモータ 3を制御することによりスライド移動範囲内で任意の位置 にスライド 4を位置決めする。  The control unit 9 controls the servo motor 3, the die clamper 14, and the slide adjustment mechanism 20. The controller 9 controls the servo motor 3 to position the slide 4 at an arbitrary position within the slide movement range.
[0039] 上記のように構成されたサーボプレス 1では、スライド調整機構駆動モータ 22を回 転駆動してプレス加工に適した高さにスライド調整機構 20の高さを調節した後、サー ボモータ 3を回転させて動力変換機構 16を介してスライド 4を昇降させ、上金型 10と 下金型 12をプレス成型に必要な距離まで接近させることにより、ワークのプレス加工 を行う。  In the servo press 1 configured as described above, the slide adjustment mechanism drive motor 22 is rotated to adjust the height of the slide adjustment mechanism 20 to a height suitable for press working, and then the servo motor 3 The workpiece 4 is pressed by moving the slide 4 up and down through the power conversion mechanism 16 and bringing the upper die 10 and the lower die 12 close to the distance necessary for press molding.
[0040] 図 4Aに示すように、サーボモータ 3を回転させることにより、動力変換機構 16の下 端位置は、ボルスタ 8の上面から Hitの高さにある上死点と、ボルスタ 8の上面から H lbの高さにある下死点との間で変化する。 [0040] As shown in FIG. 4A, by rotating the servo motor 3, the power conversion mechanism 16 The end position varies between a top dead center at the height of Hit from the top surface of bolster 8 and a bottom dead center at the height of H lb from the top surface of bolster 8.
図 4Bに示すように、ある時刻における動力変換機構 16の下端のボルスタ 8上面か らの距離を hi、スライド調整機構 20の高さを h2とする。また、スライド 4の厚さは変化 しないので、ここでは便宜的にスライド 4の厚さを 0とする（すなわち、ここではスライド 調整機構 20の下端とスライド 4の下端は一致する）。この場合、ボルスタ 8上面に対す るスライド 4の下面位置 h3は、 h3=hl— h2で与えられる。ただし、 Hlb≤hl≤Hlt である。  As shown in FIG. 4B, the distance from the upper surface of the bolster 8 at the lower end of the power conversion mechanism 16 at a certain time is hi, and the height of the slide adjustment mechanism 20 is h2. In addition, since the thickness of the slide 4 does not change, the thickness of the slide 4 is set to 0 here for convenience (that is, the lower end of the slide adjusting mechanism 20 and the lower end of the slide 4 coincide here). In this case, the lower surface position h3 of the slide 4 with respect to the upper surface of the bolster 8 is given by h3 = hl−h2. However, Hlb≤hl≤Hlt.
[0041] 図 5は、本発明に力、かる機械プレスの金型交換方法の手順を説明する図である。  FIG. 5 is a diagram for explaining the procedure of the die changing method for the mechanical press which is effective in the present invention.
図 5では、図 2に示した従来の機械プレスの金型交換方法の手順と対比できるよう、 対応する動作には同一のステップ番号で示している。  In FIG. 5, the corresponding operation is indicated by the same step number so that it can be compared with the procedure of the conventional mechanical press die changing method shown in FIG.
また、図 6A〜Dは本発明の金型交換方法を実施する際のスライド 4の下面高さの 変化を示し、図 7A〜Dは従来の金型交換方法を実施する際のスライド下面の変化を 示している。図 7A〜Dにおける従来例の「動力変換機構」は、図 1のクランク軸 53及 びコンロッド 55がこれに該当する。  FIGS. 6A to 6D show changes in the lower surface height of the slide 4 when the mold exchanging method of the present invention is performed, and FIGS. 7A to 7D show changes in the lower surface of the slide when the conventional mold exchanging method is performed. Is shown. The conventional “power conversion mechanism” in FIGS. 7A to 7D corresponds to the crankshaft 53 and the connecting rod 55 in FIG.
なお、以下では、現在の金型（交換前の金型）を「現型」といい、次の金型（交換後 の金型）を「次型」という。  In the following, the current mold (mold before replacement) is referred to as “current mold”, and the next mold (mold after replacement) is referred to as “next mold”.
[0042] 図 6A及び図 7Aに示すように、現型で生産中は、現型で生産するための下死点に おけるスライド下面の高さを h3pcとすると、スライド調整機構 20の高さは h2pc = Hlb — h3pcとなっている。これは、本発明も従来例も同じである。図 4と同様に、スライド 4 の厚さは変化しないので、ここでは便宜的にスライド 4の厚さを 0とする（すなわち、こ こではスライド調整機構 20の下端とスライド 4の下端は一致する）。  [0042] As shown in FIG. 6A and FIG. 7A, if the height of the bottom surface of the slide at the bottom dead center for production with the current model is h3pc during production with the current model, the height of the slide adjustment mechanism 20 is h2pc = Hlb — h3pc. This is the same in the present invention and the conventional example. Similar to FIG. 4, the thickness of the slide 4 does not change, so the thickness of the slide 4 is set to 0 for convenience (that is, the lower end of the slide adjusting mechanism 20 and the lower end of the slide 4 coincide here). ).
本発明の金型交換方法は以下の手順で行なう。  The mold exchanging method of the present invention is performed according to the following procedure.
[0043] (開始）  [0043] (Start)
図 5を参照して、現型による生産を終了し、スライド 4は停止している。このとき、スラ イド調整機構 20は、スライド 4下死点におけるスライド 4下面が現型で生産するための 高さ（現型生産用スライド調整高さ）となるように、調整されてレ、る。  Referring to Fig. 5, the production by the current model is finished, and slide 4 is stopped. At this time, the slide adjusting mechanism 20 is adjusted and adjusted so that the bottom surface of the slide 4 at the bottom dead center of the slide 4 becomes a height for producing the current model (the height of the slide adjustment for the current model production). .
[0044] (ステップ 1) 本発明の金型交換方法では、従来例のステップ 1に相当する段階はないため、ス テツプ 2に進む。 [0044] (Step 1) In the mold exchanging method of the present invention, since there is no stage corresponding to Step 1 of the conventional example, the process proceeds to Step 2.
[0045] (ステップ 2) [0045] (Step 2)
制御部 9による制御の下、サーボモータ 3を回転させてスライド 4を下降させる。この ときスライド 4は、下金型 12の上に上金型 10が丁度乗る位置で停止する。ここで、図 6Bに示すように、現型をアンクランプするためにスライド 4下面を停止させる高さを H 3ucとする。  Under the control of the control unit 9, the servo motor 3 is rotated and the slide 4 is lowered. At this time, the slide 4 stops at a position where the upper mold 10 just gets on the lower mold 12. Here, as shown in FIG. 6B, the height at which the lower surface of the slide 4 is stopped to unclamp the current mold is H 3uc.
図 7Bに示すように、従来例では、スライド調整機構 20の高さ（全高）が h2uc = Hlb — H3ucになるようにスライド調整機構 20を動作させた後、動力変換機構 16下端を 下死点、すなわち、高さ Hlbで停止させていた。  As shown in Fig. 7B, in the conventional example, after the slide adjustment mechanism 20 is operated so that the height (total height) of the slide adjustment mechanism 20 is h2uc = Hlb — H3uc, the bottom end of the power conversion mechanism 16 is set to the bottom dead center. That is, it was stopped at a height of Hlb.
これに対し、本発明では、スライド調整機構 20の高さは h2pcのまま変化させず、動 力変換機構 16の下端位置が hluc = h2pc + H3ucとなるようにサーボモータ 3を制 御する。従って本発明では従来例と比較して、スライド調整機構 20の高さを変化させ る時間を省略できる。  On the other hand, in the present invention, the height of the slide adjustment mechanism 20 remains h2pc, and the servomotor 3 is controlled so that the lower end position of the power conversion mechanism 16 becomes hluc = h2pc + H3uc. Therefore, in the present invention, the time for changing the height of the slide adjusting mechanism 20 can be omitted as compared with the conventional example.
[0046] (ステップ 3) [0046] (Step 3)
制御部 9による制御の下、ダイクランパ 14を動作させ、現型の上金型 10をアンクラ ンプする。これにより、現型の上金型 10がスライド 4から解放される。  Under the control of the control unit 9, the die clamper 14 is operated to unclamp the upper mold 10 of the current type. As a result, the current upper mold 10 is released from the slide 4.
[0047] (ステップ 4) [0047] (Step 4)
制御部 9による制御の下、サーボモータ 3を回転させ、スライド 4を上死点に達しな い所定の位置まで上昇させて待機させる。具体的には、現型をアンクランプした後、 現型 ·次型の出し入れの際に、金型とスライド 4およびその付属品（図示せず）が干渉 しな!/、ようにスライド 4を上昇させる。 Under the control of the control unit 9, the servo motor 3 is rotated, and the slide 4 is raised to a predetermined position where the top dead center is not reached, and is put on standby. Specifically, after unclamping the current mold, the slide 4 and its accessories (not shown) will not interfere with each other when the current mold and the next mold are taken in and out. Raise.
従来例ではスライド 4を上死点まで上昇させていた。これに対し、本発明では、スラ イド 4及びその付属品力 S、現型 ·次型の出し入れに支障ない最低限の高さまでだけス ライド 4が上昇するようにサーボモータ 3を制御する。従って本発明では従来例と比較 して、スライド 4の上昇距離、すなわち移動に要する時間を短縮できる。  In the conventional example, slide 4 was raised to the top dead center. On the other hand, in the present invention, the servo motor 3 is controlled so that the slide 4 is raised only to a minimum height that does not interfere with the insertion / extraction of the slide 4 and its accessory force S and the current / next type. Therefore, in the present invention, as compared with the conventional example, the ascending distance of the slide 4, that is, the time required for movement can be shortened.
なお実際にどれだけの高さまでスライド 4を上昇させればよいかは、実機における目 測、図面上での検討、 CADソフトの干渉チェック機能の利用、等の手段により決める こと力 Sでさる。 The actual height of Slide 4 to be raised is determined by means such as actual measurement, examination on the drawing, use of CAD software interference check function, etc. That's the power S.
[0048] (ステップ 5) [0048] (Step 5)
制御部 9による制御の下、スライド調整機構 20を動作させ、スライド 4の下死点にお けるスライド 4の下面が次型で生産するための高さ（次型生産用スライド調整高さ）と なるように、調整する。この調整によりスライド調整高さは「現型生産用スライド調整高 さ」から「次型生産用スライド調整高さ」に変更される。  Under the control of the control unit 9, the slide adjustment mechanism 20 is operated, and the bottom surface of the slide 4 at the bottom dead center of the slide 4 is a height for producing the next mold (slide adjustment height for the next mold production) and Adjust so that As a result of this adjustment, the slide adjustment height is changed from “slide adjustment height for current production” to “slide adjustment height for next production”.
並行して、現型の上金型'下金型をサーボプレス 1から取り出し、次型の上金型'下 金型を重ねた状態でサーボプレス 1のボルスタ 8上に載置する。  At the same time, the upper mold “lower mold” of the current mold is taken out from the servo press 1 and placed on the bolster 8 of the servo press 1 with the upper mold “lower mold” of the next mold stacked.
(ステップ 6)  (Step 6)
制御部 9による制御の下、サーボモータ 3を回転させ、スライド 4を下降させる。  Under the control of the control unit 9, the servo motor 3 is rotated and the slide 4 is lowered.
[0049] ここで、図 6Cに示すように、次型をクランプするためにスライド下面を停止させる高 さを H3cnとする。 [0049] Here, as shown in FIG. 6C, the height at which the lower surface of the slide is stopped to clamp the next mold is H3cn.
図 7Cに示すように、従来例では、スライド調整機構 20の高さが h2cn = Hlb— H3 cnになるようにスライド調整機構 20を作動させた後、動力変換機構 16の下端を下死 点、すなわち、高さ Hlbで停止させていた。  As shown in FIG. 7C, in the conventional example, after the slide adjustment mechanism 20 is operated so that the height of the slide adjustment mechanism 20 becomes h2cn = Hlb—H3 cn, the lower end of the power conversion mechanism 16 is placed at the bottom dead center. In other words, it was stopped at a height of Hlb.
これに対し、本発明では、スライド調整機構 20の高さ（全高）を h2pn = Hlb— H3p nに変化させた後、動力変換機構 16の下端位置が hlcn = h2pn + H3cnとなるよう に、サーボモータ 3を制御する。ここで、 H3pnは、次型で生産するための下死点に おけるスライド下面の高さである。  On the other hand, in the present invention, after changing the height (total height) of the slide adjustment mechanism 20 to h2pn = Hlb—H3pn, the servo control is performed so that the lower end position of the power conversion mechanism 16 becomes hlcn = h2pn + H3cn. Controls motor 3. Here, H3pn is the height of the bottom surface of the slide at the bottom dead center for production in the next mold.
従って従来例では、動力変換機構 16の下端が上死点から移動を開始するのに対 し、本発明では、上死点よりも低い位置力 移動を開始するので、移動に要する時間 を短縮できる。  Therefore, in the conventional example, the lower end of the power conversion mechanism 16 starts moving from the top dead center, whereas in the present invention, the position force movement lower than the top dead center is started, so the time required for the movement can be shortened. .
[0050] (ステップ 7) [0050] (Step 7)
制御部 9による制御の下、ダイクランパ 14を動作させ、次型の上金型 10をクランプ する。これにより、次型の上金型 10がスライド 4に固定される。  Under the control of the control unit 9, the die clamper 14 is operated and the upper mold 10 of the next mold is clamped. As a result, the upper mold 10 of the next mold is fixed to the slide 4.
(ステップ 8)  (Step 8)
制御部 9による制御の下、サーボモータ 3を回転させ、スライド 4を生産が開始できる 高さまで上昇させる。 [0051] (ステップ 9) Under the control of the control unit 9, the servo motor 3 is rotated to raise the slide 4 to a height at which production can be started. [0051] (Step 9)
図 7Dに示すように従来例では、スライド調整機構 20の高さが h2pnになるようにスラ イド調整機構 20を動作させていた。これに対し、図 6Dに示すように本発明では、す でにスライド調整機構 20の高さが h2pnになっているため、スライド調整機構 20の動 作を省略できる。したがって、本発明の金型交換方法では、従来例のステップ 9に相 当する段階はない。  As shown in FIG. 7D, in the conventional example, the slide adjustment mechanism 20 is operated so that the height of the slide adjustment mechanism 20 is h2pn. On the other hand, as shown in FIG. 6D, in the present invention, since the height of the slide adjustment mechanism 20 is already h2pn, the operation of the slide adjustment mechanism 20 can be omitted. Therefore, in the mold exchanging method of the present invention, there is no stage corresponding to Step 9 of the conventional example.
[0052] (終了）  [0052] (End)
次型による生産が可能になる。  Production by the next mold becomes possible.
[0053] 上述したように、スライド調整機構 20を有するプレス機械の場合、従来の機械プレ スでは、ダイハイト調整位置の変更を 3回行なう必要があった（図 2のステップ 1 , 5, 9 )。これに対し、本発明では、金型の相違に対応するための変更のみを行なえばよく 、従来の金型交換のステップ 1 , 9については、スライド 4の位置決め制御によって対 応できるため、スライド調整機構 20の動作を省略できる。したがって、スライド調整機 構 20の動作に要する時間を大幅に短縮することができる。  [0053] As described above, in the case of a press machine having the slide adjustment mechanism 20, in the conventional machine press, it is necessary to change the die height adjustment position three times (steps 1, 5, and 9 in FIG. 2). . On the other hand, in the present invention, it is only necessary to make a change to cope with the difference in the molds. Since steps 1 and 9 of the conventional mold exchange can be handled by the positioning control of the slide 4, slide adjustment is possible. The operation of mechanism 20 can be omitted. Therefore, the time required for the operation of the slide adjusting mechanism 20 can be greatly shortened.
[0054] また、スライド調整高さを変更するステップを、プレス機械から上下の金型を取り出 して別の上下の金型をプレス機械に搬入するステップと並行して行なうことにより、効 率的に交換作業を進行し、金型交換を迅速に行なうことができる。  [0054] Further, the step of changing the slide adjustment height is performed in parallel with the step of taking out the upper and lower molds from the press machine and bringing the other upper and lower molds into the press machine. Therefore, the replacement work can be progressed and the mold can be replaced quickly.
[0055] 動力変換機構 16として、例えば特許文献 4に示されているように、モータの一方向 の回転に対してスライドが昇降を繰り返す機構であってスライドの下降時と上昇時の 移動量がモータの回転角に対して非対称となるものがある。特許文献 4に示された機 構は、クランク軸とリンク機構とからなるものである。このような動力変換機構における クランク角度とスライド 4変位との関係は、例えば、図 8に示すようになる。図 8では、 0 。 〜θ の区間よりも、 Θ 〜360° の区間の方がスライド移動量が大きい。  [0055] As shown in Patent Document 4, for example, as the power conversion mechanism 16, the slide repeatedly moves up and down with respect to the rotation of the motor in one direction, and the amount of movement when the slide is lowered and when the slide is raised is as follows. Some are asymmetric with respect to the rotation angle of the motor. The mechanism disclosed in Patent Document 4 includes a crankshaft and a link mechanism. The relationship between the crank angle and the slide 4 displacement in such a power conversion mechanism is, for example, as shown in FIG. In Figure 8, 0. The slide movement amount is larger in the section of Θ to 360 ° than in the section of ˜θ.
1 1  1 1
このような動力変換機構の場合、本発明では、スライド 4の移動を含む上記ステップ 2, 4, 6, 8において、サーボモータ 3を正逆転させることにより、サーボモータ 3の回 転角に対して移動量が大きい側の区間を利用してスライド 4を昇降させる。こうするこ とにより、スライド 4の移動時間を短縮することができるので、金型交換作業を迅速化 できる。 [0056] なお、上述した実施形態では、サーボモータ 3の回転角の検出により動力変換機 構 16の下端位置を測定したが、動力変換機構 16の下端位置をリニアエンコーダゃリ ユアスケールを用いて測定してもよレ、。 In the case of such a power conversion mechanism, in the present invention, in steps 2, 4, 6, and 8 including the movement of the slide 4, the servo motor 3 is rotated in the forward and reverse directions so that the rotation angle of the servo motor 3 is reduced. Slide 4 is moved up and down using the section with the larger amount of movement. In this way, the time required for moving the slide 4 can be shortened, so that the mold replacement work can be speeded up. In the above-described embodiment, the lower end position of the power conversion mechanism 16 is measured by detecting the rotation angle of the servo motor 3, but the lower end position of the power conversion mechanism 16 is measured using a linear encoder linear scale. You can measure it.
上述した実施形態では、リニアエンコーダやリニアスケールによりスライド調整機構 20の高さを測定した力 スライド調整機構駆動モータ 22の回転角をロータリーェンコ ーダゃレゾルバで測定し、機構から決まるモータ回転角と高さの関係式を用いて高さ を計算するようにしてもよい。  In the embodiment described above, the force obtained by measuring the height of the slide adjustment mechanism 20 using a linear encoder or linear scale. The rotation angle of the slide adjustment mechanism drive motor 22 is measured by a rotary encoder / resolver, and the motor rotation angle determined by the mechanism is determined. The height may be calculated using the relationship between the height and the height.
上述した実施形態では、モータの駆動によりスライド調整機構 20の高さを調整した 1S 油圧シリンダや空圧シリンダで駆動するようにしてもよい。  In the embodiment described above, the slide adjustment mechanism 20 may be driven by a 1S hydraulic cylinder or a pneumatic cylinder whose height is adjusted by driving the motor.
上述した実施形態では、ステップ 5においてダイハイトの調整を行なった力、必要に 応じて別の段階で行なってもよい。この場合、他のステップにおいて、ダイハイトの調 整分を考慮してスライド 4の移動量を決定する必要がある。  In the embodiment described above, the force obtained by adjusting the die height in step 5 may be performed at another stage as necessary. In this case, it is necessary to determine the amount of movement of slide 4 in consideration of die height adjustment in other steps.
[0057] スライド調整機構を有しないサーボプレスの場合、図 5のステップ 5におけるスライド 調整機構の動作を省略し、ステップ 6において、現型で生産するための下死点にお けるスライド下面高さと、次型で生産するための下死点におけるスライド下面高さとの 差を補正して、動力変換機構の下端位置を動かせばよい。この場合、生産中であつ ても、動力変換機構の下端が下死点に達せず、下死点より上方でサーボモータの回 転方向を反転させてスライドを上昇させるような運転とすることが多い。  [0057] In the case of a servo press that does not have a slide adjustment mechanism, the operation of the slide adjustment mechanism in step 5 in FIG. 5 is omitted, and in step 6, the height of the slide bottom surface at the bottom dead center for production on the current model is determined. The lower end position of the power conversion mechanism may be moved by correcting the difference from the height of the bottom surface of the slide at the bottom dead center for production in the next model. In this case, even during production, the lower end of the power conversion mechanism does not reach bottom dead center, but the servo motor rotation direction is reversed above the bottom dead center to raise the slide. Many.
[0058] 上記において、本発明の実施形態について説明を行った力 上記に開示された本 発明の実施の形態は、あくまで例示であって、本発明の範囲はこれら発明の実施の 形態に限定されない。本発明の範囲は、特許請求の範囲の記載によって示され、さ らに特許請求の範囲の記載と均等の意味および範囲内でのすべての変更を含むも のである。  [0058] In the above, the force for explaining the embodiments of the present invention The embodiments of the present invention disclosed above are merely examples, and the scope of the present invention is not limited to the embodiments of the present invention. . The scope of the present invention is indicated by the description of the scope of claims, and further includes meanings equivalent to the description of the scope of claims and all modifications within the scope.

Claims

請求の範囲 The scope of the claims
[1] プレス駆動源であるサーボモータの回転運動を動力伝達機構を介してスライドの昇 降運動として伝達し、前記サーボモータを制御することによりスライド移動範囲内で任 意の位置にスライドを位置決め可能なプレス機械の金型交換方法であって、 上金型が下金型の上に載る位置に前記スライドを移動するステップと、前記スライド 力、ら上金型を解放するステップと、前記スライドを上死点に達しな!/、所定の位置まで 上昇させて待機させるステップと、前記プレス機械から上下の金型を取り出して、別 の上下の金型を前記プレス機械に搬入するステップと、上金型をスライドに固定する ための位置に前記スライドを下降させるステップと、前記スライドに上金型を固定する ステップと、プレス加工の開始が可能な位置まで前記スライドを上昇させるステップと 、を含むことを特徴とするプレス機械の金型交換方法。  [1] The rotary motion of the servo motor, which is the press drive source, is transmitted as the slide up / down motion via the power transmission mechanism, and the slide is positioned at an arbitrary position within the slide movement range by controlling the servo motor. A mold exchanging method of a possible press machine, the step of moving the slide to a position where the upper mold rests on the lower mold, the step of releasing the upper mold from the sliding force, and the slide The top dead center is not reached! /, A step of raising to a predetermined position and waiting, a step of taking out the upper and lower molds from the press machine, and bringing the other upper and lower molds into the press machine; The step of lowering the slide to a position for fixing the upper mold to the slide, the step of fixing the upper mold to the slide, and the slide to a position where pressing can be started. Mold changing method of a press machine, characterized in that it comprises a step of raising the de, a.
[2] 前記プレス機械はダイハイトを調整するスライド調整機構を有するものであり、 該スライド調整機構を動作させ、スライド調整機構の高さを、元の金型によりプレス 加工するための調整高さから、次の金型によりプレス加工するための調整高さに変更 するステップを含む、ことを特徴とする請求項 1に記載のプレス機械の金型交換方法 [2] The press machine has a slide adjustment mechanism that adjusts the die height. The slide adjustment mechanism is operated, and the height of the slide adjustment mechanism is adjusted from the adjustment height for press working with the original mold. The method for changing a die of a press machine according to claim 1, further comprising a step of changing to an adjustment height for press working with the next die.
[3] 前記スライド調整機構の高さを変更するステップを、前記プレス機械から上下の金 型を取り出して別の上下の金型を前記プレス機械に搬入するステップと並行して行な う、ことを特徴とする請求項 2に記載のプレス機械の金型交換方法。 [3] The step of changing the height of the slide adjusting mechanism is performed in parallel with the step of taking out the upper and lower molds from the press machine and loading the other upper and lower molds into the press machine. The die replacement method for a press machine according to claim 2, wherein:
[4] 前記プレス機械の動力伝達機構は、前記サーボモータの一方向の回転に対して 前記スライドが昇降を繰り返す機構であって前記スライドの下降時と上昇時の移動量 が前記サーボモータの回転角に対して非対称となるものであり、  [4] The power transmission mechanism of the press machine is a mechanism in which the slide repeatedly moves up and down with respect to the rotation of the servo motor in one direction, and the movement amount when the slide is lowered and raised is the rotation of the servo motor. It is asymmetric with respect to the corner,
前記各ステップのうち前記スライドの移動を含むものにおいて、前記サーボモータ の回転角に対して移動量が大きい側の区間を利用して前記スライドを昇降させる、こ とを特徴とする請求項 1に記載のプレス機械の金型交換方法。  2. The step including the movement of the slide among the steps, wherein the slide is moved up and down using a section having a larger movement amount with respect to a rotation angle of the servo motor. The die change method of the press machine as described.
[5] プレス駆動源であるサーボモータと、下面に上金型が取り付けられ昇降運動するス ライドと、上金型を前記スライドの下面に解放可能に固定するダイクランパと、前記サ ーボモータの回転運動を前記スライドの昇降運動に変換する動力伝達機構と、少な くとも前記サーボモータ及び前記ダイクランパを制御する制御部とを備え、該制御部 が前記サーボモータを制御することによりスライド移動範囲内で任意の位置にスライ ドを位置決め可能なプレス機械であって、 [5] Servo motor that is a press drive source, a slide that moves up and down with an upper mold attached to the lower surface, a die clamper that releasably fixes the upper mold to the lower surface of the slide, and a rotational motion of the servo motor A power transmission mechanism for converting A press machine capable of positioning the slide at an arbitrary position within a slide movement range by controlling the servo motor.
前記制御部は、金型交換時に、上金型が下金型の上に載る位置に前記スライドを 移動させ、次いで前記スライドから上金型を解放し、次いで前記スライドを上死点に 達しな!/、所定の位置まで上昇させて待機させるように前記サーボモータ及び前記ダ イクランパを制御し、前記プレス機械から上下の金型が取り出され、別の上下の金型 が前記プレス機械に搬入された後に、上金型をスライドに固定するための位置に前 記スライドを下降させ、次いで前記スライドに上金型を固定し、次いでプレス加工の 開始が可能な位置まで前記スライドを上昇させるように前記サーボモータと前記ダイ クランパを制御する、ことを特徴とするプレス機械。  The control unit moves the slide to a position where the upper mold rests on the lower mold when the mold is replaced, then releases the upper mold from the slide, and then does not reach the top dead center. ! /, The servo motor and the die clamper are controlled so as to rise to a predetermined position and stand by, the upper and lower molds are taken out from the press machine, and the other upper and lower molds are carried into the press machine. After that, the slide is lowered to a position for fixing the upper mold to the slide, then the upper mold is fixed to the slide, and then the slide is raised to a position where the press work can be started. A press machine that controls the servo motor and the die clamper.
[6] 更に、ダイハイトを調整するスライド調整機構を備え、 [6] Furthermore, a slide adjustment mechanism for adjusting the die height is provided.
前記制御部は、前記金型交換時に、前記スライド調整機構の高さを、元の金型によ りプレス加工するための調整高さから、次の金型によりプレス加工するための調整高 さに変更するように前記スライド調整機構を制御する、ことを特徴とする請求項 5に記 載のプレス機械。  The control unit adjusts the height of the slide adjustment mechanism from the adjustment height for pressing with the original die to the press adjustment with the next die when exchanging the die. The press machine according to claim 5, wherein the slide adjusting mechanism is controlled to change to
[7] 前記制御部は、前記金型交換時における前記スライド調整機構の高さを変更する ための制御を、前記プレス機械から上下の金型が取り出されて別の上下の金型が前 記プレス機械に搬入される作業と並行して行なう、ことを特徴とする請求項 6に記載 のプレス機械。  [7] The control unit performs control for changing the height of the slide adjusting mechanism at the time of replacing the mold. The upper and lower molds are taken out from the press machine, and the other upper and lower molds are The press machine according to claim 6, wherein the press machine is performed in parallel with the work carried into the press machine.
[8] 前記動力伝達機構は、前記サーボモータの一方向の回転に対して前記スライドが 昇降を繰り返す機構であって前記スライドの下降時と上昇時の移動量が前記サーボ モータの回転角に対して非対称となるものであり、  [8] The power transmission mechanism is a mechanism in which the slide repeatedly moves up and down with respect to rotation of the servo motor in one direction, and the amount of movement when the slide is lowered and when the slide is raised is relative to the rotation angle of the servo motor. Is asymmetric,
前記制御部は、金型交換時のスライドの移動時に、前記サーボモータの回転角に 対して移動量が大きい側の区間を利用して前記スライドを昇降させるように前記サー ボモータを制御する、ことを特徴とする請求項 5に記載のプレス機械。  The control unit controls the servo motor to move the slide up and down using a section on the side having a larger movement amount with respect to a rotation angle of the servo motor when the slide is moved at the time of mold replacement. The press machine according to claim 5, wherein:
PCT/JP2007/064355 2006-07-25 2007-07-20 Method for changing die of press machine and press machine WO2008013116A1 (en)

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JP2006201624A JP2008023578A (en) 2006-07-25 2006-07-25 Die exchanging method in press machine, and press machine

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102039690A (en) * 2009-10-13 2011-05-04 株式会社Ihi Die cushion device for press machine
CN102343994A (en) * 2011-05-20 2012-02-08 苏州工业园区德森包装机械有限公司 Mold replacing system for packaging equipment

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI410026B (en) * 2010-12-03 2013-09-21 Shihlin Electric & Eng Corp Alternator flywheel polygonal pole forming device
JP5160671B2 (en) 2011-07-29 2013-03-13 コマツ産機株式会社 Press machine and its top dead center detection method
JP5806875B2 (en) * 2011-07-29 2015-11-10 コマツ産機株式会社 Press machine and slide position adjusting method thereof
CN103357763B (en) * 2012-03-30 2015-07-08 鞍钢股份有限公司 Device and method for replacing large die of automobile sheet punching machine
US9828128B1 (en) 2014-12-17 2017-11-28 X Development Llc On-demand protective structures for packaging items in a container
US9840347B1 (en) 2014-12-17 2017-12-12 X Development LLX Adhering modular elements for packaging structures
CN108943826B (en) * 2018-06-22 2020-06-26 睢宁县永达工具制造有限公司 Multi-angle mold table for machining
JP2020019050A (en) * 2018-08-02 2020-02-06 株式会社アマダホールディングス Metal mold press device and metal mold changing method of metal mold press device
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DE102021100281B3 (en) 2021-01-11 2022-05-05 Audi Aktiengesellschaft Forming tool and method for operating a forming tool
CN115625259B (en) * 2022-10-10 2023-11-28 江苏智诚电力设备有限公司 Case mold for processing case based on high precision

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06142996A (en) * 1992-10-30 1994-05-24 Hirotec:Kk Die change, forming method and its equipment in tandem press line
JPH06344200A (en) * 1993-06-10 1994-12-20 Toyota Motor Corp Adjusting method for slide height of press, and mounting method for press upper die
JP2003320489A (en) * 2002-05-01 2003-11-11 Murata Mach Ltd Servomotor driven type link press
JP2005211928A (en) * 2004-01-29 2005-08-11 Komatsu Sanki Kk Press system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6124392A (en) 1984-07-13 1986-02-03 Toshiba Corp Stereo television
US5199290A (en) * 1989-10-19 1993-04-06 Aida Engineering, Ltd. Method of automatic adjustment of die height of a press
US6012322A (en) * 1998-03-27 2000-01-11 Aida Engineering Co., Ltd. Slide-driving device for knuckle presses
JP2003117698A (en) * 2001-10-10 2003-04-23 Komatsu Ltd Slide-driving device in press machine and its driving method
JP2003290984A (en) 2002-04-03 2003-10-14 Komatsu Ltd Servo press
JP2004034111A (en) 2002-07-04 2004-02-05 Komatsu Aatec Kk Driving-gear of press and driving method for the same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06142996A (en) * 1992-10-30 1994-05-24 Hirotec:Kk Die change, forming method and its equipment in tandem press line
JPH06344200A (en) * 1993-06-10 1994-12-20 Toyota Motor Corp Adjusting method for slide height of press, and mounting method for press upper die
JP2003320489A (en) * 2002-05-01 2003-11-11 Murata Mach Ltd Servomotor driven type link press
JP2005211928A (en) * 2004-01-29 2005-08-11 Komatsu Sanki Kk Press system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102039690A (en) * 2009-10-13 2011-05-04 株式会社Ihi Die cushion device for press machine
CN102343994A (en) * 2011-05-20 2012-02-08 苏州工业园区德森包装机械有限公司 Mold replacing system for packaging equipment

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US20100064907A1 (en) 2010-03-18
RU2410186C2 (en) 2011-01-27
DE112007001658T5 (en) 2009-06-04
CN101495298A (en) 2009-07-29
KR20090034341A (en) 2009-04-07
JP2008023578A (en) 2008-02-07

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